Chains and heterogens:
PDB Chain Sequences:
>1kfaH (H:) vmlvesggglvkpggslklscaasgftfssyamswvrqtperrlewvatittrgytfypd svkgrftvsrdnarntlnlqmsslrsedtamfyctregllldyftmdywgqgtsvtvssa kttppsvyplapxxxxxxxsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlqsdl ytlsssvtvpsssrpsetvtcnvahpasstkvdkkivpad
>1kfaH (H:) vmlvesggglvkpggslklscaasgftfssyamswvrqtperrlewvatittrgytfypd svkgrftvsrdnarntlnlqmsslrsedtamfyctregllldyftmdywgqgtsvtvssa kttppsvyplapsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlqsdlytlsssv tvpsssrpsetvtcnvahpasstkvdkkivpad
>1kfaI (I:) mlvesggglvkpggslklscaasgftfssyamswvrqtperrlewvatittrgytfypds vkgrftvsrdnarntlnlqmsslrsedtamfyctregllldyftmdywgqgtsvtvssak ttppsvyplapxxxxxxxsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlqsdly tlsssvtvpsssrpsetvtcnvahpasstkvdkkivp
>1kfaI (I:) mlvesggglvkpggslklscaasgftfssyamswvrqtperrlewvatittrgytfypds vkgrftvsrdnarntlnlqmsslrsedtamfyctregllldyftmdywgqgtsvtvssak ttppsvyplapmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlqsdlytlsssvtv psssrpsetvtcnvahpasstkvdkkivp
>1kfaL (L:) dvvmtqtplslsvslgdqasiscrssqslvhsngntylhwylqkpgqspklliykvssrf sgfpdrfsgsgsgtdftlkisrveaedlgvyfcsqsthvpftfgsgtkleikradagptv ssfppsseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysm sstltltkdeyerhasytceaahktstspiaksfnra
>1kfaM (M:) dvvmtqtplslsvslgdqasiscrssqslvhsngntylhwylqkpgqspklliykvssrf sgfpdrfsgsgsgtdftlkisrveaedlgvyfcsqsthvpftfgsgtkleikradagptv ssfppsseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysm sstltltkdeyerhasytceaahktstspiaks